Bookbinder.



F. G. KOLLENBERG.

BOOKBINDBR. APPLICATION IILIID MAR. 6, 1907. RENEWED OCT. 24,1908.

913,737, I Patented Mar. 2, 1909.

UNITED STATES PATENT onnron.

, FREDERICK G. KOLLENBERG, OF OW'ENSBORO, KENTUCKY.

BOOK'BINDER.

To all whom it may concern:

Be it known that I, FREDERICK G. KOL- LENBERG, of Owensboro, in thecounty of Daviess, State of Kentucky, have invented certain new anduseful Improvements in Bookbinder-s, of which the following is aspecification.

The object of my invention is to produce a book binder of that classknown as looseleaf binders, which, being adapted to hold together sheetsof pa er, or pamphlets consisting of a number 0 sheets united, may beemployed throughout the range of utility proper to loose-leaf bindersgenerally.

In the accompanying drawings, which constitute a part of thisapplication, Figure I is a perspective view of a complete book,embodying my invention, closed and looking at it from the back. Fi 11 isa transverse section on the line IIIT of Fig I. Fig. III is a' frontelevation of the inside view of the back of one of my binders, one endthereof beingshown partially in longitudinal section, and the covers ofthe back being removed.

Referring to the numerals on the drawing, 1 indicates one portion and 2the other of my binder back, which are provided, respectively, withend-pieces 3 and 4 which contribute to the slidable union of the membersreferred to. The end-piece 3 is provided with a slot 5, which is of atransverse extent substantially correspondent to the diameter of a keyhole 6 in the end-piece 4. The elongation of the slot 5 is designed topermit, within limits determined by the length of the slot, freedom ofrelative movement between the members 1 and 2 independently of anyobstacle which may be presented through the key hole 6.

8 indicates a bar, located on the inside of the members 1 and 2, andlongitudinally movable toward and from the key hole 6. This bar isprovided upon one side with a rack 9 substantially coextensive with thedistance of the longitudinal movement of the bar 8. It is within reachof operative engagement of a dog 10, pivoted, as indicated atll, to theinside of the member 1 and actuated towards engagement with the rack 9as by a leaf-spring 12.

13 indicates the tail of the dog, against which a screw 14, working in ascrew-plate 15 projecting from the member 1, abuts.

' the screw 14 in one direction By turning towards the bar 8, the dog 10is forced out Specification of Letters Patent. Application filed March6, 1907, Serial No. 360,827. Renewed October 24, 1908.

Patented March 2, 1909.

Serial No. 459,369.

of engagement with the rack 9, and upon turning it in the oppositedirection, the dog 10 is permitted to yield to the force of the spring12 and seek engagement with the rack 9. Opposite the end of the screw14, a key hole 16 is provided, with which registers the fiatted end 17of the screw 14.

The bar 8 is operatively united, as indicated at 19 and 20,respectively, to one each of the pivot-pins of two sets of doubletogglelevers 21 and 22. The pivot-pins 23 and 24, which unite themembers of the toggle-levers 21 and 22, respectively, at points oppositethe ins 19 and 20 respectively, work free of the ar 8 and of the members1 and 2, but each toggle-lever is operatively united, as in dicated at25 and 26, respectively, to the parts 2 and 1, respectively.

By reason of the union between the bar 8 and the respectivetoggle-levers, and the members 1 and 2 of the binder back, the movementof the members 1 and 2, to and from each other, is rendered controllableby the longitudinal movement of the bar 8, communicated through as manysets of togglelevers as are employed. According to my invention, aplurality of at least two sets of toggle-levers must be employed, asillustrated, but the number may be increased beyond two to any extentdesired.

Through the cooperation of the dog 10 and the rack 9 upon the bar 8, thescrew 14 being retracted to permit free operation of the dogundertension of its spring 12, it is practicable, without provision ofadditional mechanism, to render the binder, as described, operative.This may be accomplished by squeezing the members 1 and 2, assumed to beprovided, respectively, with suitable enga ing jaws, together, so thatthey may take hoTd and retain whatever of a suitable nature to form abook that is placed between them. As the members 1 and 2 are forcedtowards each other by lateral pressure, the pivot-pins 25 and 26 of eachset of to gle-levers are drawn closer towards each other, while thepivot-pins l9 and 23 and 20 and 24, respectively, are separated morewidely. The result is that the bar 8 is driven longitudinally in onedirection. Moving in that direction, the rack '9 on the bar 8 passesagainst the yielding dog 10, which operates to arrest its movement inthe opposite direction. If, however, at any time the operator desires topermit the separation of the members 1 and 2, that may be readilyaccomplished by turning the screw'l4 againstthe tail 13 ofthedog 10 soas to lift it out of engagement withthe teeth of the rack 9.

Instead of depending simply upon lateral pressure against the members 1and 2"to' press them together, I prefer to employ a screw 27'revolublyfixed to the member 1, as by the aid of a plate 28 upon said member, anda collar 29 fixed to the screw. The threaded end 30 of the screw worksin the internally threaded bore of a block 31that is secured to the bar8. The end of the screw 27 might operativelytproject beyond theendpieces 3 and-4 of the ack pieces 1 and 2, but

I prefer to provide the screw 27 with a fiatted terminal 33 between theplate 28 and the endpiece 3, where as operatively presented foractuation to a key 34 that may be inserted through the key hole 6 andslot 5. By this arrangement, provision is made against accidental orunauthorized turning of the screw 27, andthe screw 14, as well as thescrew 27, may be made to be operated by the same key 34. If desired, anyordinary or preferred meansof protection against the use of an improperkey may be employed.

It has been specified that the members 1 and 2 are provided,respectively, with jaws for clamping between them loose leaves, or thelike, into a book. Such jaws are shown in the several figures of thedrawing and are indicated by'the reference numerals 35 and 36,respectively. Each aw is preferably rovided with a clamping-plate 37extending from one end to the other of the jaw to which it is attached,the inner faces of the two clamping-plates being arallel to each other.Jaws 35 and 36 preferably are provided with members 48 and 47,respectively. The member 47 is adapted to telescope within the member 48when the members 1 and 2 are in clamping position, as shown in Fig. III.When the members 47 and 48 are separated through movement of the members1 and 2, apertured sheets of writing material may be placed over member47 or member 48, and when said members are in the telescoping position,the writing material is held firmly in place. Each of the members 1 and2, being preferably made of metal, is provided with a bead-like turn orcorner 40, which may serve as a finish and at the same time a recess forthe accommodation of a hinge pintle 41, by which each cover 42 of thebook may be united to the back members, as by hinge straps 43.

While it is believed that the operation of my device will be wellunderstood from inspection of the drawing, in view of the foregoingspecification, yet it is pertinent to add that as often as the number ofleaves, indicated by the reference numeral 45, is increased ordiminished, the tension upon the clamping-plates 37 being relieved forthe purpose, it is necessary only in restoring those described, thescrew 14 being sufficiently retracted to permit the working of the dog.

It is to be understood that the operation of this device takes place, asdescribed above, only when the screw 27 is omitted from theconstruction. In many cases, however, it is preferable to employ thescrew 27, and when used the clamping-plates are moved toward or fromeach other by rotation of said screw. It will be seen, moreover, thatwhen a dog is not employed, or has retired from service through theintervention of the screw 14, the action of the screw 27 is sufii cientto retain the clamping-members in their respective positions.

/Vhat I claim is 1. In a loose-leaf binder, the combination with a pairof relatively movable back-pieces adapted to act asleaf-retaining-members, of an endwise movable bar, operatively connectedwith said back-pieces to actuate them, and a rack and dog adaptedautomatically to fix the bar in any position to which it is moved.

2. In a loose-leaf binder, the combination with a pair of relativelymovable back-pieces adapted to act as leaf-retaining-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them,- a rack and dog adapted automatically to fix the bar inany position to which it is moved, and means for throwing, at will, thedog out of engagement with the rack.

3. In a loose-leaf binder, the combination with a pair of relativelymovable back-pieces adapted to act as leaf-retaining-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them, and a screw carried by one of said back-pieces anddirectly connectedwith the bar to impart endwise motion to it.

4. In a loose-leaf binder, the combination with a pair of relativelymovable back-pieces adapted to act as leaf-retaining-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them, .a screw carried by one of said backpieces and operativelyconnected with the bar to impart endwise motion to it, and a rack anddog adapted automatically to fix i the bar in any position to which itis moved.

5. In a loose-leaf binder, the combination with a pair of relativelymovable back-pieces adapted to act as leaf-retaining-members, of anendwise movable bar, operatively c0nnected with said back-pieces toactuate them, a screw carried by one of said backpieces and operativelyconnected with the bar to impart endwise motion to it, a rack and dogadapted automatically to fix the bar in any position to which it ismoved, and means for throwing, at will, the dog out of enga ement withthe rack.

. 6. n a loose-leaf binder, the combination with a air of relativelymovable back-pieces adapte toact as leaf-retaining-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them, a screw carried by one of said backpieces and directlyconnected with the bar to impart endwise motion to it, and a key foractuating said screw.

7. In a loose-leaf binder, the combination with a pair of relativelymovable back-pieces adapted to act as leaf-retaining-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them, a screw carried by one of said back- Eieces andoperatively connected with the ar to im art endwise motion to it, a rackand dog adapted automatically to fix the bar in any position to which itis moved, means for throwing, at will, the dog out of engagement withthe rack, and a key adapted to actuate either the screw or thedog-throwing means, at will.

8. In a loose-leaf binder, the combination with a air of relativelymovable back-pieces adapte to act as leaf-retaming-members, of anendwise movable bar, operatively connected with said back-pieces toactuate them, a screw carried by one of said backpieces and operativelyconnected with the bar to impart endwise motion to it, and means forlocking the bar against movement in one direction while permitting itscontinued movement in the opposite direction.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

FREDERICK G. KOLLENBERG.

Witnesses J. A. FRAYSER, E. E. MILLER.

